JPH0629064U - connector - Google Patents

Abstract

(57) [Summary] [Purpose] To securely fix the fork-shaped terminal to the housing. [Structure] A first projection and a second projection are juxtaposed to a positioning piece that projects substantially parallel to a contact piece of a substantially fork-shaped terminal, and the height of the insertion-side first projection is set to be smaller than the height of the second projection. Then, these projections are pressed against the middle wall or bottom wall of the housing to securely fix the terminal. And,
The lower part of the tip of the connecting piece is alternately punched to increase the area of the contact part.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connector for connecting a flexible cable and a fork-shaped terminal, and particularly when the terminal is connected to a round conductor tape electric wire, the terminal is securely fixed to a required position of an insulating housing to reduce a contact area. It is intended to ensure the connection reliability with the round conductor.

[0002]

[Prior art]

 Recently, as shown in FIGS. 5A and 5B, there is provided a round conductor tape electric wire 3 in which round conductors 2 are arranged in parallel on the upper surface of a flexible insulating sheet 1 with a required gap. The circular conductor 2 has an advantage that the diameter D thereof can be made to be about 0.5 mm and can be made ultra-fine, and the pitch P can be made to be about 0.8 mm, so that the pitch can be made narrower. It is suitable for use as an internal wiring material for which home appliances such as cameras and OA equipment are required to be light, thin, short and compact.

As this type of flexible cable, in addition to the above-mentioned round conductor tape electric wire, a flexible flat cable (FFC) and a flexible printed circuit (FPC) are provided. However, the FFC pushes the conductor flat, so bending is not possible, and the conductor can only form parallel wiring of straight lines. On the other hand, since the FPC is manufactured using a mold, it is possible to freely wire the mold. However, the mold manufacturing cost increases, and the cost increases, and it is not easy and time-consuming to manufacture the mold. There is a problem that it is difficult to change the shape. On the other hand, the round conductor tape electric wire has an advantage that it can be bent and the wiring can be easily changed.

A connector for connecting the above-mentioned flexible cable to a fork-shaped terminal usually has a structure shown in FIG. That is, a fork-shaped terminal 7 is inserted into a large number of terminal receiving holes 6 arranged in parallel in the insulating housing 5, while a flat flexible cable 9 and a sliding member 8 are provided between the contact piece 7a and the positioning piece 7b of the terminal 7. Then, the flexible cable 9 is pressed toward the contact piece 7a by the pressing portion 8a of the slide member 8.

[0005]

[Problems to be solved by the device]

 When the round conductor tape electric wire 3 shown in FIG. 5 is used as the flexible cable 9, it has the advantages that it can be bent and the wiring can be changed easily as described above. Since it is extremely small and is in point contact with the terminal 7, even if there is a slight deviation in the pitch between the round conductors 2 arranged in parallel with the terminal 7, or if there is a variation in the pitch, there is the problem of connection failure. is there. There is also a drawback that poor connection is likely to occur even when the contact force between the terminal and the round conductor is insufficient.

[0006] The problem that the conductors and the terminals arranged side by side in the flexible cable are easily displaced and it is difficult to sufficiently apply the pressure contact force is not only the conductor side but also the plate thickness of the fork-shaped terminal. Since the contact width is, the narrow contact area is also a cause.

The present invention has been made in view of the above problems, and it is possible to securely fix a terminal to a required position with respect to an insulating housing and ensure contact with a conductor of a flexible cable. Even for round conductors with a small contact area, the reliability of connectivity can be increased.

[0008]

[Means for Solving the Problems]

 That is, the present invention is substantially fork-shaped, in which the contact piece and the positioning piece project substantially parallel to each other in the same direction from the connecting piece, and the first projection and the second projection juxtapose from either the upper or lower surface of the positioning piece. , A terminal with the height of the first protrusion on the insertion side set to be smaller than the height of the second protrusion, and a number of terminal receiving holes that penetrate the axial direction and into which the above terminal is inserted are installed side by side. In addition, each terminal receiving hole is divided into a contact piece hole into which the terminal contact piece hole is inserted by the intermediate wall and a positioning piece hole into which the positioning piece is inserted. An insulating housing set so that the first protrusion and the second protrusion are pressed against each other, and a flexible cable inserted between the contact piece and the positioning piece of the terminal through the other end opening of the terminal receiving hole. The present invention provides a connector including a bull and a slide member that is inserted between the positioning piece and presses the flexible cable to elastically contact the contact piece.

Further, in the present invention, by alternately punching out the lower end portions of the contact pieces of the above-mentioned terminal, the contact area, which had only a contact area corresponding to the plate thickness, is about twice as large as the plate thickness. The contact portion has an area.

Further, in the present invention, since the area of the contact portion is large and the positioning and fixing of the terminal are ensured as described above, the round conductor tape electric wire can be preferably used as the flexible cable. .

[0011]

[Action]

 As described above, in the connector of the present invention, the first and second protrusions are provided on the terminal positioning piece for fixing to the housing, and the height of these protrusions is lowered on the insertion side. The two protrusions can be used to secure the terminal in place. Therefore, the terminal can be fixed inside the housing without rattling.

In this way, the terminal can be held in pressure contact with the housing at a predetermined position, and if the contact area of the terminal is made large as described above, the terminal can be securely attached even to a circular conductor having a small contact area. Can be connected.

[0013]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. In FIG. 1, 10 is a housing integrally molded from an insulating resin, 11 is a fork-shaped terminal formed by punching out a conductive metal (copper alloy, etc.), and 12 is a slide member integrally molded from an insulating resin. As the flexible cable connected to the terminal 11, the round conductor tape electric wire 3 shown in FIG. 5 is used.

The housing 10 has a large number of terminal receiving holes 15 arranged side by side in the horizontal direction. The upper and lower partition walls 16 partitioning the terminal receiving holes 15 extend from the terminal insertion side X 1 to a substantially central portion in the axial direction. I am present. On the terminal insertion side X of each terminal receiving hole 15, there is provided a horizontal intermediate wall 19 that divides the terminal receiving hole 15 into upper and lower stages. The intermediate partition 19 divides the terminal receiving hole 15 into two upper and lower contact piece holes 17 and a positioning piece hole 18 which penetrate from the terminal insertion side X to the flexible cable and slide member insertion side Y.

As shown in the figure, the fork-shaped terminal 11 connects a contact piece 20 and a positioning piece 21 composed of upper and lower arms projecting in the same horizontal direction and parallel to each other, and connecting one end of the contact piece 20 and the positioning piece 21. It is composed of a vertical connecting portion 22 and a lead piece 23 protruding in the horizontal direction on the opposite side from the lower end of the connecting portion 22.

At the tip of the contact piece 20, a lower portion is alternately punched out on both sides in the width direction to provide a pair of protrusions 24a and 24b, and a wide contact portion 24 is formed by these protrusions 24a and 24b. There is. Further, the contact piece 20 is inclined slightly upward from the connecting portion 22 so as to be projected, and then is slightly inclined downward toward the front end side.

On the other hand, the lower positioning piece 21 has two first protrusions 25 and a second protrusion 26 protruding in a saw-tooth shape at the central portion on the upper surface side. The height H1 of the first protrusion 25 on the protruding side is set smaller than the height H2 of the second protrusion 26 on the connecting piece side, and H1 <H2.

The slider 12 is inserted into the housing 10 from the Y side opposite to the terminal insertion side. The pressing portion 28 is projected from one side surface upper part of the board portion 27 and the housing 10 is provided at both longitudinal ends of the board portion 27. The holding part 29 to the is integrally provided. The holding portion 29 is adapted to be retained and retained by the attachment portions 30 formed on both side surfaces of the housing 10 in the longitudinal direction at the temporary engagement position and the final engagement position. The pressing portion 28 is made of a long thin plate and is inserted between the contact piece 20 and the positioning piece 21 of each terminal 11 from the opening side of the terminal receiving hole 15 which communicates in the horizontal direction. The electric wire 3 is pressed to elastically contact the round conductor 2 with the contact portion 24 of the contact piece 20.

The above-mentioned connectors are assembled in the order shown in FIG. 3, and first, the terminals 11 are inserted into the respective terminal receiving holes 15 of the housing 10. At this time, the contact piece 20 of the terminal 11 is inserted into the contact piece hole 17 and the positioning piece 21 is inserted into the positioning piece hole 18 from the X side. At the time of inserting the terminal, on the positioning piece 21 side, the first projection 25 is press-fitted while slidingly contacting the lower surface of the intermediate wall 19, and then the second projection 26 slides on the same surface as the first projection 25 slidingly contacts. It is pressed in while touching. At that time, since the relationship between the height H1 of the first protrusion 25 and the height H2 of the second protrusion 26 is H1 <H2 as described above, the sliding contact with the first protrusion 25 causes the intermediate wall 19 to contact the intermediate wall 19. Even if abrasion occurs, there is no rattling between the second protrusion 26 and the intermediate wall, which come into sliding contact with the latter, and the pressure contact between the second protrusion 26 and the intermediate wall 19 causes the terminal 11 to move to a predetermined position inside the housing 10. It is securely held in place.

Next, the slide member 12 is inserted into the housing 10 from the Y side, and the holding portion 29 is temporarily locked to the mounting portion 30. In this temporarily locked state, the round conductor tape electric wire 3 is inserted between the contact piece 20 and the positioning piece 21 of the terminal 11 located inside the housing 10 along the upper surface of the pressing portion 28 of the slide member 12. .

Then, the slide member 12 is pushed to the final locking position. By this pushing, the linear upper surface of the pressing portion 28 of the slide member 12 comes to a position facing the tip contact portion 24 of the contact piece 20, and the round conductor 2 of the round conductor tape electric wire 3 elastically contacts the contact portion 24. Let At this time, the contact portion 24 of the terminal 11 is formed by alternately punching out the lower portion of the contact piece 20, and the surface area thereof is close to twice the plate thickness, so that the contact surface with the round conductor 2 is increased. Therefore, even if the position of the round conductor 2 is displaced by about 0.2 to 0.5 mm, it can be brought into contact with the contact portion 24.

The present invention is not limited to the above embodiment, and the first protrusion 25 and the second protrusion 26 projecting from the positioning piece to press and fix the positioning piece of the terminal are provided on the lower surface side of the positioning piece 21. The first projection 25 and the second projection 26 may be pressed against the bottom wall of the housing to fix the positioning piece.

[0023]

[Effect of device]

 As is clear from the above description, in the connector according to the present invention, two protrusions are provided on the intermediate wall as the protrusions for fixing the terminal to the housing, and the first protrusion on the insertion side is more than the second protrusion. Since the height is set low, the terminal can be inserted into the housing at the required position by the first protrusion, and then the terminal can be securely pressed and fixed to the housing by the second protrusion. In this way, since the terminal can be securely fixed to the housing at a predetermined position, the terminal and each conductor of the flexible cable can be brought into contact with each other with a stable pressure contact force without displacement.

Furthermore, since the lower end of the tip of the contact piece of the terminal is alternately struck to provide the contact portion having the cross-sectional area approximately twice the plate thickness, it is possible to make contact even if the conductor position of the flexible cable is slightly displaced. .

As described above, since the terminal can be securely fixed in a predetermined position and the contact area of the terminal is large, the contact area of the round conductor is smaller than that of the flat type conductor. In addition, the contactability can be improved and the reliability of the connector can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a connector according to the present invention.

2 shows the terminal shown in FIG. 1 in detail, (A) is a front view, (B) is a plan view, and (C) is a sectional view.

FIG. 3 is a cross-sectional view showing an assembly process of the connector.

FIG. 4 is a perspective view of an assembled state of the connector.

FIG. 5 shows a round conductor tape electric wire, (A) is a plan view,
(B) is a sectional view.

FIG. 6 is a sectional view of a conventional connector.

[Explanation of symbols]

 1 Insulating Film 2 Round Conductor 3 Round Conductor Tape Wire 10 Housing 11 Terminal 12 Sliding Member 15 Terminal Receiving Hole 17 Contact Piece Hole 18 Positioning Piece Hole 19 Intermediate Wall 20 Contact Piece 21 Positioning Piece 22 Connecting Piece 23 Lead Piece 24 Contact Point 25th One protrusion 26 Second protrusion 28 Pressing part

Claims (3)

[Scope of utility model registration request] 1. A substantially fork-shaped member, wherein the contact piece and the positioning piece project from the coupling piece in substantially the same direction, and the first projection and the second projection project side by side from either the upper or lower surface of the positioning piece. A terminal with the height of the first protrusion on the insertion side set to be smaller than the height of the second protrusion, and a number of terminal receiving holes through which the terminal is inserted through the one end opening that penetrates in the axial direction are arranged side by side. Further, each terminal receiving hole is vertically divided into a contact piece hole into which the contact piece hole of the terminal is inserted by the intermediate wall and a positioning piece hole into which the positioning piece is inserted, and the first protrusion is formed on the intermediate wall or the bottom wall. And an insulating housing set so that the second protrusions are pressed against each other, a flexible cable inserted between the contact piece and the positioning piece of the terminal through the other end opening of the terminal receiving hole, A connector that is inserted between the positioning piece and a slide member that presses a flexible cable to elastically contact the contact piece. 2. The connector according to claim 1, wherein the lower end of the tip of the contact piece of the terminal is alternately punched to form a contact portion having a large area. 3. The connector according to claim 1, wherein the flexible cable is a round conductor tape electric wire.